Product Description
MBRP 3-Inch Black-Coated Turbo Downpipe
Upgrade your Chevrolet Silverado or GMC Sierra equipped with the 6.6L Duramax LML diesel engine with the MBRP 3-Inch Turbo Downpipe. Designed for select 2015-2016 trucks equipped with the factory 3-bolt flange connection, this replacement downpipe provides a smoother exhaust path while maintaining compatibility with the factory emissions system.
Constructed from aluminized steel with a high-heat black protective coating, this downpipe features mandrel-bent 3-inch tubing designed to promote exhaust flow and reduce restriction. Its direct-fit design provides a vehicle-specific replacement for the factory turbo downpipe.
The MBRP GMCA428 is a standalone exhaust component, not a complete exhaust system. It is designed to connect to the existing exhaust equipment and retain the vehicle's original emissions components. This product is listed under California Air Resources Board Executive Order D-763-2 for applicable vehicle configurations.
Features
- MBRP vehicle-specific replacement turbo downpipe
- 3-inch aluminized steel construction
- High-heat black protective coating
- Mandrel-bent tubing for improved exhaust flow
- Designed to reduce exhaust restriction
- Direct-fit replacement design
- Compatible with factory 3-bolt flange connections only
- Designed for 6.6L Duramax LML diesel engines
- Retains factory emissions equipment
- CARB Executive Order D-763-2
- Installation hardware included as specified by MBRP
- 3-year limited system warranty
- 1-year warranty on black finish
Specifications
- Brand: MBRP
- Part Number: GMCA428
- Product Type: Turbo Downpipe
- Series: ARMOR BLK
- Material: Aluminized Steel
- Finish: High-Heat Black Coating
- Pipe Diameter: 3 inches
- Construction: Mandrel-Bent Tubing
- Connection Requirement: Factory 3-Bolt Flange
- Engine: 6.6L Duramax LML Diesel
- CARB Executive Order: D-763-2
- Muffler: Not Included
- Exhaust Tip: Not Included
- Complete Exhaust System: No
- Manufacturer Warranty: 3-Year Limited System Warranty and 1-Year Finish Warranty
Vehicle Fitment
- 2015.5-2016 Chevrolet Silverado 2500HD - 6.6L Duramax LML Diesel
- 2015.5-2016 Chevrolet Silverado 3500HD - 6.6L Duramax LML Diesel
- 2015.5-2016 GMC Sierra 2500HD - 6.6L Duramax LML Diesel
- 2015.5-2016 GMC Sierra 3500HD - 6.6L Duramax LML Diesel
Fitment Note
Designed for applicable 2015.5-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks equipped with the 6.6L Duramax LML diesel engine and factory 3-bolt flange downpipe connection.
Important Fitment Restriction: Fits 3-bolt flange applications only. Does not fit earlier V-band outlet configurations. Some 2015 vehicles use the earlier connection, so the flange style must be verified before ordering. Do not rely on model year alone.
Important: This product is a standalone replacement turbo downpipe. It does not include a complete exhaust system, muffler, or exhaust tip. Retain the factory emissions components and follow the manufacturer's installation instructions.
Emissions Information: CARB Executive Order D-763-2 applies to specified vehicle applications and configurations. Installation must comply with the conditions of the executive order and all applicable emissions regulations.
California Proposition 65 Warning: WARNING: This product can expose you to chemicals including nickel (metallic) and chromium (hexavalent compounds), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
